Can you reverse the rotation on a manual transmission?
#1346453
12/05/12 04:43 PM
12/05/12 04:43 PM
|
Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
OP
Senior Management
|
OP
Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
|
I was bombing around in that desolate area between my ears and this came to mind.
Can you use a current production 5 or 6 speed manual transmission in an application that would reverse the direction of the input shaft? This assumes you want the output direction reversed as well.
I don't see there being an issue with the helical gears since they work the same in either direction. My concern would be thrust on the shafts.
Would lubrication be an issue?
I understand that some manual transmissions are using sprags that prevent reverse rotation so those would be out of the question.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: dogdays]
#1346455
12/05/12 05:53 PM
12/05/12 05:53 PM
|
Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
OP
Senior Management
|
OP
Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
|
This would be a real one-off situation where the transmission would be mounted remotely and facing the wrong way. The brainstorm involves something way out in left field so I won't bring that up.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: Lightning]
#1346464
12/05/12 10:31 PM
12/05/12 10:31 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
Feets wants to turn the Imp into a wheel stander.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: feets]
#1346467
12/06/12 12:20 AM
12/06/12 12:20 AM
|
Joined: Oct 2006
Posts: 842 Urbana, MD
bordin34
super stock
|
super stock
Joined: Oct 2006
Posts: 842
Urbana, MD
|
Also with the same input direction the boxster has an opposite output as the 911. The Boxster should also be the same, in terms of rotation, as a 944 trans which you can buy for around $200 but they are very weak. Also known as Audi 016 trans. A 968 trans should also be the same and its a stronger 6-speed. Same transaxle used in Audis up to the 2000s.
Last edited by bordin34; 12/06/12 12:23 AM.
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: feets]
#1346468
12/06/12 12:25 AM
12/06/12 12:25 AM
|
Joined: Jan 2003
Posts: 8,501 Candler,NC / Myrtle Beach, SC
JDMopar
master
|
master
Joined: Jan 2003
Posts: 8,501
Candler,NC / Myrtle Beach, SC
|
There is/was (not sure if he's still kickin)a guy here in town who was a transmission builder. He had a 40 Ford, 2 door sedan with a small block Chevy and a Turbo 400 in it. Nice car too. Behind the Turbo 400, he mounted some kind of a 3 spd straight drive transmission backwards. Slip yokes of each transmission shared the same u joint. I can' remember much about how the driveshaft was hooked to the original input shaft of the 3 spd, other than it looked like a round plate welded to the shaft. Plate was close to the trans case, and had a cv joint/slip yoke combo thingy on it. He used it as an overdrive. Don't ask me how, but it sort of made sense when he explained it to me 30 years ago. Word on the street is, that the setup is still in the car and working. I saw it with my own eyes when I was in my early 20's,and the car is still here local. Next time I see it at a cruise in, I'll ask the dude that owns it now if I can peek under it to see if it's really still in there.
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: feets]
#1346469
12/06/12 03:47 AM
12/06/12 03:47 AM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
I remember way back when Feets claimed to have seen a functioning /6 mounted on it's side & I thought for sure that he had went off his meds & was in dire need of some hands on adult supervision but that was not the case as lo & behold he produced (& posted) a pic of it (it was powering a boat iirc)
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Can you reverse the rotation on a manual transmission?
[Re: feets]
#1346470
12/06/12 03:32 PM
12/06/12 03:32 PM
|
Joined: Jan 2003
Posts: 25,951 Rio Linda, CA
John_Kunkel
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,951
Rio Linda, CA
|
Some transmission cases have cast-in ledges that direct lube to bearings...these ledges depend on lube thrown off of gears turning in a specific direction.
The INTERNET, the MISinformation superhighway
|
|
|
|
|